Pathology photographs from adult female mountain cottontail rabbit

Photographs from an adult female mountain cottontail rabbit (Sylvilagus nuttallii) found dead in Montana, U.S.A. (A) Liver with random foci of necrosis (asterisk) characterized by accumulation of cellular detritus intermingled with fibrin and colonies of small coccoid bacteria (inset). H&E stain. (B) The spleen exhibits multifocal confluent areas of necrosis (asterisk) comprised of accumulation of cellular detritus and fibrin (inset). H&E stain. (C) Few areas of necrosis are found within the lung (arrow) and surrounding alveoli contain edema fluid. H&E stain. (D) Peyers Patches are severely depleted showing intrafollicular lymphoid necrosis (arrow). H&E stain.